JP2020169752A - Air conditioning duct and method for constructing air conditioning duct - Google Patents

Air conditioning duct and method for constructing air conditioning duct Download PDF

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JP2020169752A
JP2020169752A JP2019070440A JP2019070440A JP2020169752A JP 2020169752 A JP2020169752 A JP 2020169752A JP 2019070440 A JP2019070440 A JP 2019070440A JP 2019070440 A JP2019070440 A JP 2019070440A JP 2020169752 A JP2020169752 A JP 2020169752A
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air conditioning
duct
heat insulating
insulating material
conditioning duct
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JP7262279B2 (en
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久美 後藤
Hisami Goto
久美 後藤
俊之 柏木
Toshiyuki Kashiwagi
俊之 柏木
勝男 松岡
Katsuo Matsuoka
勝男 松岡
匡平 仲原
Kyohei Nakano
匡平 仲原
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Ask Okinawa Co Ltd
Ask Sanshin Engineering Corp
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Ask Sanshin Engineering Corp
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Abstract

To provide an air conditioning duct that can suppress cracks due to vibration of a duct itself and save time and effort for attaching tape to a mating line of a thermal insulation material and a joint line.SOLUTION: An air conditioning duct 10 installed outdoor includes: a square duct body 11; a thermal insulation material 17 made of a foam rubber and covering an outside surface 11a of the duct body 11; and a silicone resin film 18 for covering an outside surface of the thermal insulation material 17.SELECTED DRAWING: Figure 2

Description

本発明は、空調ダクトに関し、特に、屋外に設置される空調ダクトに関する。 The present invention relates to an air conditioning duct, and more particularly to an air conditioning duct installed outdoors.

空調用設備の一つに空調ダクトがある。空調ダクトは、暖かい空気や冷たい空気を流すために用いられる。空調ダクトには、熱損失や結露を防ぐために断熱材が設けられることが多い。たとえば、特許文献１には、グラスウールなどのマット状繊維質保温材を主材とし、この保温材の一面に固着面外被材を、他面に化粧面外被材を貼着してなる空調ダクト用断熱材が記載されている。また、特許文献１には、角形のダクト本体に接着剤を用いて固着面外被材を貼り付けるとともに、固着面外被材の外側にマット状繊維質保温材と化粧面外被材とを積層し、空調ダクト用断熱材の合わせ目や繋ぎ目を目貼りテープで留めた構成が記載されている。 One of the air conditioning equipment is an air conditioning duct. Air conditioning ducts are used to carry warm or cold air. Air conditioning ducts are often provided with heat insulating material to prevent heat loss and condensation. For example, Patent Document 1 describes an air conditioner in which a matte fibrous heat insulating material such as glass wool is used as a main material, a fixed surface outer cover material is attached to one surface of the heat insulating material, and a decorative outer cover material is attached to the other surface. Insulation for ducts is listed. Further, in Patent Document 1, a fixed surface outer cover material is attached to a square duct main body by using an adhesive, and a matte fibrous heat insulating material and a decorative surface outer cover material are attached to the outside of the fixed surface outer cover material. The configuration is described in which the joints and joints of the heat insulating materials for air conditioning ducts are laminated and taped together.

特開２０００−１７１０８５号公報Japanese Unexamined Patent Publication No. 2000-171085

しかしながら、特許文献１に記載の技術では、アルミ粘着テープやアルミガラスクロス粘着テープなどの目貼りテープを使って断熱材の合わせ目や繋ぎ目を塞いでいるため、空調ダクトの振動に起因して目貼りテープの貼り付け部分にひび割れが生じやすいという欠点があった。また、断熱材の合わせ面や繋ぎ目ごとに目貼りテープを貼り付ける必要があるため、施工に手間がかかるという欠点もあった。 However, in the technique described in Patent Document 1, since the joints and joints of the heat insulating material are closed by using the adhesive tape such as aluminum adhesive tape or aluminum glass cloth adhesive tape, it is caused by the vibration of the air conditioning duct. There is a drawback that cracks are likely to occur in the portion to which the eye-pasting tape is attached. In addition, since it is necessary to attach a meshing tape to each of the mating surfaces and joints of the heat insulating material, there is a drawback that the construction is troublesome.

本発明は、上記課題を解決するためになされたもので、その目的は、ダクト自体の振動に起因するひび割れを抑制することができるとともに、断熱材の合わせ目や継ぎ目にテープを貼り付ける手間を省くことができる空調ダクトとその施工方法を提供することにある。 The present invention has been made to solve the above problems, and an object of the present invention is to suppress cracks caused by vibration of the duct itself, and to save the trouble of attaching tape to the seams and seams of the heat insulating material. The purpose is to provide an air conditioning duct that can be omitted and its construction method.

本発明は、屋外に設置される空調ダクトであって、角形のダクト本体と、ダクト本体の外面を覆う発泡ゴム製の断熱材と、断熱材の外面を覆うシリコーン樹脂膜と、を備える。 The present invention is an air-conditioning duct installed outdoors, and includes a square duct main body, a foam rubber heat insulating material covering the outer surface of the duct main body, and a silicone resin film covering the outer surface of the heat insulating material.

本発明に係る空調ダクトにおいては、ダクト本体の上部に、シリコーン樹脂膜を覆う状態で保護板が取り付けられていてもよい。 In the air conditioning duct according to the present invention, a protective plate may be attached to the upper part of the duct body so as to cover the silicone resin film.

本発明に係る空調ダクトにおいて、シリコーン樹脂膜は、アクリル樹脂を含有する膜であってもよい。 In the air conditioning duct according to the present invention, the silicone resin film may be a film containing an acrylic resin.

本発明は、屋外に設置される空調ダクトの施工方法であって、角形のダクト本体の外面に発泡ゴム製の断熱材を貼り付けることにより、ダクト本体の外面を断熱材によって覆う工程と、断熱材の外面にシリコーンコーティング材を塗布することにより、断熱材の外面をシリコーン樹脂膜によって覆う工程と、を含む。 The present invention is a method for constructing an air-conditioning duct installed outdoors, in which a step of covering the outer surface of the duct body with a heat insulating material by attaching a heat insulating material made of foam rubber to the outer surface of a square duct body and heat insulation. It includes a step of covering the outer surface of the heat insulating material with a silicone resin film by applying a silicone coating material to the outer surface of the material.

本発明によれば、ダクト自体の振動に起因するひび割れを抑制することができるとともに、断熱材の合わせ目や継ぎ目にテープを貼り付ける手間を省くことができる。 According to the present invention, it is possible to suppress cracks caused by vibration of the duct itself, and it is possible to save the trouble of attaching tape to the seams and seams of the heat insulating material.

本発明の第１実施形態に係る空調ダクトの縦断面図である。It is a vertical sectional view of the air conditioning duct which concerns on 1st Embodiment of this invention. 図１の空調ダクトのＩＩ−ＩＩ断面図である。FIG. 2 is a sectional view taken along line II-II of the air conditioning duct of FIG. 本発明の第２実施形態に係る空調ダクトの縦断面図である。It is a vertical sectional view of the air conditioning duct which concerns on 2nd Embodiment of this invention. 図３の空調ダクトのＩＶ−ＩＶ断面図である。FIG. 3 is a sectional view taken along line IV-IV of the air conditioning duct of FIG. 、図４のＡ部を拡大した図である。, It is an enlarged view of the part A of FIG.

以下、本発明の実施形態について図面を参照して詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

（第１実施形態）
図１は、本発明の第１実施形態に係る空調ダクトの縦断面図であり、図２は、図１の空調ダクトのＩＩ−ＩＩ断面図である。
図１および図２に示すように、空調ダクト１０は、角形のダクト本体１１を備えている。角形のダクト本体とは、ダクト内が中空になっていて、ダクト中心軸Ｃ（図１参照）と直交する方向にダクト本体を断面したときの開口形状が多角形であるものをいう。本第１実施形態において、ダクト中心軸Ｃと直交する方向にダクト本体１１を断面したときの開口形状が図２に示すように四角形になっている。 (First Embodiment)
FIG. 1 is a vertical sectional view of the air conditioning duct according to the first embodiment of the present invention, and FIG. 2 is a II-II sectional view of the air conditioning duct of FIG.
As shown in FIGS. 1 and 2, the air conditioning duct 10 includes a square duct body 11. The square duct main body means that the inside of the duct is hollow and the opening shape when the duct main body is cross-sectionald in a direction orthogonal to the duct central axis C (see FIG. 1) is polygonal. In the first embodiment, the opening shape when the duct main body 11 is cross-sectionald in the direction orthogonal to the duct central axis C is a quadrangle as shown in FIG.

空調ダクト１０は、屋外に設置して用いられるものである。ダクト本体１１は、耐候性を有する金属製の板によって構成されている。耐候性を有する金属製の板としては、たとえば、亜鉛メッキ鋼板、ガルバニウム鋼板、ステンレス鋼板、高耐食性メッキ鋼板などを挙げることができる。 The air conditioning duct 10 is installed and used outdoors. The duct body 11 is made of a weather-resistant metal plate. Examples of the weather-resistant metal plate include galvanized steel sheets, galvanized steel sheets, stainless steel sheets, and highly corrosion-resistant plated steel sheets.

ダクト本体１１の端部にはフランジ部１２が一体に形成されている。空調ダクト１０は、複数のダクト本体１１を継手部分１３で連結することにより、互いに連通する空気流路１４を形成している。継手部分１３では、フランジ部１２同士を軸線Ｊの位置で突き合わせた状態でダクト本体１１が連結されている。空気流路１４は、空調用の空気や換気用の空気などを流すための流路であって、ダクト本体１１の内面１１ｂによって区画されている。 A flange portion 12 is integrally formed at the end of the duct body 11. The air conditioning duct 10 forms an air flow path 14 that communicates with each other by connecting a plurality of duct main bodies 11 with a joint portion 13. In the joint portion 13, the duct main body 11 is connected in a state where the flange portions 12 are butted against each other at the position of the axis J. The air flow path 14 is a flow path for flowing air for air conditioning, air for ventilation, and the like, and is partitioned by an inner surface 11b of the duct main body 11.

一方、ダクト本体１１の外面１１ａには接着層１６を介して断熱材１７が貼り付けられている。接着層１６は接着剤によって形成されるもので、この接着剤の接着力によってダクト本体１１の外面１１ａに断熱材１７が貼り付けられている。断熱材１７は、空気流路１４を暖かい空気や冷たい空気が流れるときの熱損失および結露を防ぐために、ダクト本体１１の外面１１ａを覆っている。断熱材１７は、発泡ゴム製の断熱材である。発泡ゴムは、断熱性および弾性が高いという性質を有するとともに、透湿性および保水性が低いという性質を有する。断熱材１７を構成する発泡ゴムとしては、たとえば、ニトリルゴム系のゴムスポンジを挙げることができる。また、接着層１６を形成する接着剤としては、たとえば、湿気硬化形接着剤、触媒添加形接着剤、嫌気形接着剤を挙げることができる。接着剤の具体例としては、コニシ株式会社製のスーパーＧライト（商品名）、アイカ工業株式会社製のエコエコボンド（登録商標）を挙げることができる。 On the other hand, the heat insulating material 17 is attached to the outer surface 11a of the duct main body 11 via the adhesive layer 16. The adhesive layer 16 is formed by an adhesive, and the heat insulating material 17 is attached to the outer surface 11a of the duct main body 11 by the adhesive force of the adhesive. The heat insulating material 17 covers the outer surface 11a of the duct main body 11 in order to prevent heat loss and dew condensation when warm air or cold air flows through the air flow path 14. The heat insulating material 17 is a heat insulating material made of foam rubber. Foam rubber has the properties of high heat insulation and elasticity, as well as the properties of low moisture permeability and water retention. Examples of the foam rubber constituting the heat insulating material 17 include a nitrile rubber-based rubber sponge. In addition, examples of the adhesive forming the adhesive layer 16 include a moisture-curable adhesive, a catalyst-added adhesive, and an anaerobic adhesive. Specific examples of the adhesive include Super G Light (trade name) manufactured by Konishi Co., Ltd. and Eco Eco Bond (registered trademark) manufactured by Aica Kogyo Co., Ltd.

断熱材１７は、図２に示すように、ダクト本体１１の外周を４つの断熱材１７−１，１７−２，１７−３，１７−４で囲むように配置されている。４つの断熱材１７−１，１７−２，１７−３，１７−４のうち、断熱材１７−１，１７−４はダクト本体１１の上下の２辺に対応して配置され、断熱材１７−２，１７−３はダクト本体１１の左右の２辺に対応して配置されている。これにより、ダクト本体１１の外面１１ａは、４つの断熱材１７−１，１７−２，１７−３，１７−４によって隙間なく覆われている。また、断熱材１７は、ダクト本体１１のフランジ部１２を覆うように、継手部分１３にも設けられている。 As shown in FIG. 2, the heat insulating material 17 is arranged so as to surround the outer periphery of the duct main body 11 with four heat insulating materials 17-1, 17-2, 17-3, and 17-4. Of the four heat insulating materials 17-1, 17-2, 17-3, 17-4, the heat insulating materials 17-1 and 17-4 are arranged corresponding to the upper and lower two sides of the duct body 11, and the heat insulating material 17 −2, 17-3 are arranged corresponding to the two left and right sides of the duct main body 11. As a result, the outer surface 11a of the duct body 11 is covered with four heat insulating materials 17-1, 17-2, 17-3, and 17-4 without gaps. Further, the heat insulating material 17 is also provided in the joint portion 13 so as to cover the flange portion 12 of the duct main body 11.

断熱材１７の外面１７ａはシリコーン樹脂膜１８によって覆われている。シリコーン樹脂膜１８は、シリコーンを主原料とする塗布膜である。本第１実施形態において、シリコーン樹脂膜１８は、シリコーンを主原料とし、このシリコーンの配合率が１００％またはそれに近いシリコーンコーティング材を用いて形成されている。シリコーン樹脂膜１８は、断熱材１７の外面１７ａをすべて覆っている。 The outer surface 17a of the heat insulating material 17 is covered with the silicone resin film 18. The silicone resin film 18 is a coating film containing silicone as a main raw material. In the first embodiment, the silicone resin film 18 is formed by using silicone as a main raw material and a silicone coating material having a silicone content of 100% or close to that of the silicone resin film 18. The silicone resin film 18 covers the entire outer surface 17a of the heat insulating material 17.

シリコーン樹脂膜１８は、断熱材１７を保護するための膜であって、耐久性、耐紫外線性、耐熱性、耐低温性、防水性、撥水性、透湿性および弾性を有する。シリコーン樹脂膜１８の耐久性は、シリコーン樹脂膜１８の性能を長期間維持にわたって維持する効果を奏する。シリコーン樹脂膜１８の耐紫外線性は、紫外線による断熱材１７の劣化を抑制する効果を奏する。シリコーン樹脂膜１８の耐熱性および耐低温性は、温度の変化に対してシリコーン樹脂膜１８の機能を維持する効果を奏する。シリコーン樹脂膜１８の防水性および撥水性は、断熱材１７への浸水を抑制する効果を奏する。シリコーン樹脂膜１８の透湿性は、シリコーン樹脂膜１８の剥がれを抑制する効果を奏する。シリコーン樹脂膜１８の弾性は、断熱材１７に対するシリコーン樹脂膜１８の付着性を高める効果と、シリコーン樹脂膜１８のひび割れを抑制する効果とを奏する。 The silicone resin film 18 is a film for protecting the heat insulating material 17, and has durability, ultraviolet resistance, heat resistance, low temperature resistance, waterproofness, water repellency, moisture permeability and elasticity. The durability of the silicone resin film 18 has the effect of maintaining the performance of the silicone resin film 18 for a long period of time. The ultraviolet resistance of the silicone resin film 18 has the effect of suppressing deterioration of the heat insulating material 17 due to ultraviolet rays. The heat resistance and low temperature resistance of the silicone resin film 18 have the effect of maintaining the function of the silicone resin film 18 against changes in temperature. The waterproofness and water repellency of the silicone resin film 18 have the effect of suppressing water infiltration into the heat insulating material 17. The moisture permeability of the silicone resin film 18 has the effect of suppressing the peeling of the silicone resin film 18. The elasticity of the silicone resin film 18 has an effect of increasing the adhesiveness of the silicone resin film 18 to the heat insulating material 17 and an effect of suppressing cracking of the silicone resin film 18.

続いて、本発明の第１実施形態に係る空調ダクトの施工方法について説明する。
まず、空調ダクトの設置場所へとダクト本体１１を搬送する前、または搬送した後に、ダクト本体１１の外面１１ａに接着層１６を介して断熱材１７を貼り付ける。これにより、ダクト本体１１の外面１１ａを断熱材１７によって覆う。このとき、発泡ゴム製の断熱材１７を用いれば、発泡ゴム自体の弾性により、ダクト本体１１の外面１１ａに接着層１６を介して断熱材１７を隙間なく密着させることができる。このため、断熱材１７による結露抑制の効果を高めることができる。 Subsequently, the construction method of the air conditioning duct according to the first embodiment of the present invention will be described.
First, before or after transporting the duct main body 11 to the installation location of the air conditioning duct, the heat insulating material 17 is attached to the outer surface 11a of the duct main body 11 via the adhesive layer 16. As a result, the outer surface 11a of the duct body 11 is covered with the heat insulating material 17. At this time, if the heat insulating material 17 made of foam rubber is used, the heat insulating material 17 can be brought into close contact with the outer surface 11a of the duct main body 11 via the adhesive layer 16 without a gap due to the elasticity of the foam rubber itself. Therefore, the effect of suppressing dew condensation by the heat insulating material 17 can be enhanced.

次に、空調ダクトの設置場所において、断熱材１７付きのダクト本体１１を所定の位置に取り付ける。たとえば、空調ダクトの設置場所にダクト取付用の架台（図示せず）が設置されている場合は、この架台にダクト本体１１を取り付ける。このとき、複数のダクト本体１１を継手部分１３で連結させることにより、所定の長さを有する空気流路１４を形成する。また、継手部分１３にも断熱材１７を貼り付けておく。 Next, at the installation location of the air conditioning duct, the duct main body 11 with the heat insulating material 17 is attached at a predetermined position. For example, when a pedestal for mounting a duct (not shown) is installed at the installation location of the air conditioning duct, the duct main body 11 is mounted on this pedestal. At this time, by connecting the plurality of duct main bodies 11 at the joint portion 13, an air flow path 14 having a predetermined length is formed. Further, the heat insulating material 17 is also attached to the joint portion 13.

次に、断熱材１７の外面１７ａにシリコーンコーティング材を塗布することにより、断熱材１７の外面１７ａをシリコーン樹脂膜１８によって覆う。シリコーンコーティング材の塗布方法としては、たとえば、スプレーガンを用いて塗る方法、刷毛を用いて塗る方法、または、ローラを用いて塗る方法を挙げることができる。また、ここで挙げた３つの塗布方法のうち少なくとも２つの塗布方法を併用することもできる。
以上で、空調ダクト１０の施工が完了する。 Next, by applying a silicone coating material to the outer surface 17a of the heat insulating material 17, the outer surface 17a of the heat insulating material 17 is covered with the silicone resin film 18. Examples of the method of applying the silicone coating material include a method of applying with a spray gun, a method of applying with a brush, and a method of applying with a roller. In addition, at least two of the three coating methods listed here can be used in combination.
This completes the construction of the air conditioning duct 10.

本発明の第１実施形態に係る空調ダクト１０においては、ダクト本体１１の外面１１ａを発泡ゴム製の断熱材１７によって覆い、さらにその断熱材１７の外面１７ａをシリコーン樹脂膜１８によって覆う構成を採用している。これにより、空調ダクト１０が振動した場合に、この振動に追従してシリコーン樹脂膜１８が伸縮する。このため、空調ダクト１０自体の振動に起因するひび割れを抑制することができる。また、断熱材１７の外面１７ａをシリコーン樹脂膜１８で覆うことにより、断熱材１７の合わせ目や継ぎ目にテープを貼り付ける必要がない。このため、貼り付けの手間を省くことができる。 In the air conditioning duct 10 according to the first embodiment of the present invention, a configuration is adopted in which the outer surface 11a of the duct body 11 is covered with a foam rubber heat insulating material 17, and the outer surface 17a of the heat insulating material 17 is covered with a silicone resin film 18. are doing. As a result, when the air conditioning duct 10 vibrates, the silicone resin film 18 expands and contracts following the vibration. Therefore, cracks caused by vibration of the air conditioning duct 10 itself can be suppressed. Further, by covering the outer surface 17a of the heat insulating material 17 with the silicone resin film 18, it is not necessary to attach the tape to the seams and seams of the heat insulating material 17. Therefore, the trouble of pasting can be saved.

なお、本第１実施形態においては、断熱材１７付きのダクト本体１１を取り付けた後に、断熱材１７の外面１７ａにシリコーンコーティング材を塗布してシリコーン樹脂膜１８を形成することとしたが、シリコーンコーティング材の塗布を複数回に分けて行ってもよい。たとえば、ダクト本体１１を取り付けた後ではシリコーンコーティング材の塗布が困難な部分が存在する場合は、ダクト本体１１を取り付ける前にその部分にシリコーンコーティング材を塗布し、ダクト本体１１を取り付けた後に残りの部分にシリコーンコーティング材を塗布してもよい。 In the first embodiment, after the duct body 11 with the heat insulating material 17 is attached, a silicone coating material is applied to the outer surface 17a of the heat insulating material 17 to form the silicone resin film 18, but silicone. The coating material may be applied in a plurality of times. For example, if there is a part where it is difficult to apply the silicone coating material after the duct body 11 is attached, the silicone coating material is applied to the part before the duct body 11 is attached, and the remaining portion is left after the duct body 11 is attached. A silicone coating material may be applied to the portion of.

（第２実施形態）
続いて、本発明の第２実施形態について説明する。本第２実施形態においては、上記第１実施形態の場合と同様の部分、または、対応する部分に同じ符号を付し、重複する説明は省略する。 (Second Embodiment)
Subsequently, the second embodiment of the present invention will be described. In the second embodiment, the same parts as those in the first embodiment or the corresponding parts are designated by the same reference numerals, and duplicate description will be omitted.

図３は、本発明の第２実施形態に係る空調ダクトの縦断面図である。また、図４は、図３の空調ダクトのＩＶ−ＩＶ断面図であり、図５は、図４のＡ部を拡大した図である。
図３〜図５に示すように、ダクト本体１１の上部には、継手部分１３を含めて、保護板２１が取り付けられている。保護板２１は、シリコーン樹脂膜１８を覆う状態でダクト本体１１の上部に取り付けられている。保護板２１は、好ましくは、金属製の板によって構成される。具体的には、保護板２１は、たとえば、厚さが０．３ｍｍ以上０．４ｍｍ以下のカラー鉄板によって構成される。カラー鉄板は、亜鉛鉄板の表面に塗料を塗布して色付けしたものである。 FIG. 3 is a vertical cross-sectional view of the air conditioning duct according to the second embodiment of the present invention. Further, FIG. 4 is a sectional view taken along line IV-IV of the air conditioning duct of FIG. 3, and FIG. 5 is an enlarged view of part A of FIG.
As shown in FIGS. 3 to 5, a protective plate 21 is attached to the upper part of the duct main body 11 including the joint portion 13. The protective plate 21 is attached to the upper part of the duct main body 11 so as to cover the silicone resin film 18. The protective plate 21 is preferably made of a metal plate. Specifically, the protective plate 21 is composed of, for example, a colored iron plate having a thickness of 0.3 mm or more and 0.4 mm or less. A colored iron plate is a galvanized iron plate coated with paint and colored.

保護板２１は、図４に示すように、天板部２１ａと、２つの側板部２１ｂとを一体に備えている。２つの側板部２１ｂは、それぞれ天板部２１ａとの境界で直角に曲げられている。また、２つの側板部２１ｂは、それぞれネジ２４を用いて固定されている。本第２実施形態において、ネジ２４は、図５に示すように、ネジ部２４ａとドリル部２４ｂとを一体に有するテックスビスによって構成されている。また、ネジ２４には、山座金２８と、ゴム製のパッキン２９とが付属している。ネジ２４のネジ部２４ａは、シリコーン樹脂膜１８、断熱材１７、接着層１６およびダクト本体１１にねじ込まれている。ネジ２４のドリル部２４ｂは、ダクト本体１１の内面１１ｂから空気流路１４側に突き出している。また、ドリル部２４ｂは樹脂層２５によって覆われている。本第２実施形態においては、樹脂層２５がシリコーン樹脂膜１８と同じ材質、すなわちシリコーン樹脂によって構成されている。 As shown in FIG. 4, the protective plate 21 integrally includes a top plate portion 21a and two side plate portions 21b. The two side plate portions 21b are bent at right angles at the boundary with the top plate portion 21a, respectively. Further, the two side plate portions 21b are fixed by using screws 24, respectively. In the second embodiment, as shown in FIG. 5, the screw 24 is composed of a tex screw having a screw portion 24a and a drill portion 24b integrally. A thread washer 28 and a rubber packing 29 are attached to the screw 24. The screw portion 24a of the screw 24 is screwed into the silicone resin film 18, the heat insulating material 17, the adhesive layer 16, and the duct body 11. The drill portion 24b of the screw 24 projects from the inner surface 11b of the duct body 11 toward the air flow path 14. Further, the drill portion 24b is covered with the resin layer 25. In the second embodiment, the resin layer 25 is made of the same material as the silicone resin film 18, that is, a silicone resin.

空調ダクト１０を施工する場合は、断熱材１７の外面１７ａをシリコーン樹脂膜１８により覆った後で、保護板２１をネジ２４を用いて取り付ける。その際、ネジ２４を締め付けると、ゴム製のパッキン２９が側板部２１ｂの外面に密着する。このため、ネジ２４を用いて保護板２１を取り付けた状態では、パッキン２９によって防水性が保持される。また、図３に示すように、空調ダクト１０の継手部分１３にはコーキング材２６が塗布される。コーキング材２６は、防水を目的として保護板２１の継ぎ目に塗布される。 When constructing the air conditioning duct 10, the outer surface 17a of the heat insulating material 17 is covered with the silicone resin film 18, and then the protective plate 21 is attached using the screws 24. At that time, when the screw 24 is tightened, the rubber packing 29 comes into close contact with the outer surface of the side plate portion 21b. Therefore, when the protective plate 21 is attached using the screw 24, the packing 29 maintains the waterproof property. Further, as shown in FIG. 3, a caulking material 26 is applied to the joint portion 13 of the air conditioning duct 10. The caulking material 26 is applied to the seam of the protective plate 21 for the purpose of waterproofing.

本発明の第２実施形態に係る空調ダクト１０においては、ダクト本体１１の上部にシリコーン樹脂膜１８を覆うように保護板２１を取り付けた構成を採用している。これにより、ダクト本体１１の上部において、断熱材１７およびシリコーン樹脂膜１８が保護板２１によって保護される。このため、空調ダクト１０の天井部分に落下物などが衝突した場合に、衝突による衝撃を保護板２１で受けることにより、断熱材１７のダメージを低減することができる。また、空調ダクト１０の施工を完了した後、空調ダクト１０の上に重量物が乗る可能性がある場合に、重量物の重さを保護板２１で受けることにより、断熱材１７の座屈を抑制することができる。空調ダクト１０の上に乗る可能性がある重量物には作業員が含まれる。 The air-conditioning duct 10 according to the second embodiment of the present invention employs a configuration in which a protective plate 21 is attached to the upper part of the duct main body 11 so as to cover the silicone resin film 18. As a result, the heat insulating material 17 and the silicone resin film 18 are protected by the protective plate 21 in the upper part of the duct main body 11. Therefore, when a falling object or the like collides with the ceiling portion of the air conditioning duct 10, the protective plate 21 receives the impact due to the collision, so that the damage to the heat insulating material 17 can be reduced. Further, when there is a possibility that a heavy object may ride on the air conditioning duct 10 after the construction of the air conditioning duct 10 is completed, the protective plate 21 receives the weight of the heavy object to buckle the heat insulating material 17. It can be suppressed. Workers are included in the heavy objects that may ride on the air conditioning duct 10.

なお、上記第１実施形態および第２実施形態においては、シリコーンの純度が高いシリコーン樹脂膜１８によって断熱材１７の外面１７ａを覆うようにしたが、シリコーンの純度が高いとシリコーン樹脂膜１８の表面が汚れやすいという難点がある。この対策として、シリコーン樹脂膜１８は、アクリル樹脂を含有する膜によって構成してもよい。アクリル樹脂を含有するシリコーン樹脂膜１８を採用した場合は、シリコーン樹脂膜１８の表面に汚れが付きにくくなる。このため、空調ダクト１０の美観を維持することができる。 In the first and second embodiments, the outer surface 17a of the heat insulating material 17 is covered with the silicone resin film 18 having a high purity of silicone, but when the purity of the silicone is high, the surface of the silicone resin film 18 is covered. Has the drawback of being easily soiled. As a countermeasure, the silicone resin film 18 may be formed of a film containing an acrylic resin. When the silicone resin film 18 containing an acrylic resin is used, the surface of the silicone resin film 18 is less likely to get dirty. Therefore, the aesthetic appearance of the air conditioning duct 10 can be maintained.

１０ 空調ダクト、１１ ダクト本体、１１ａ 外面、１７ 断熱材、１７ａ 外面、１８ シリコーン樹脂膜、２１ 保護板。 10 air conditioning duct, 11 duct body, 11a outer surface, 17 heat insulating material, 17a outer surface, 18 silicone resin film, 21 protective plate.

Claims (4)

屋外に設置される空調ダクトであって、
角形のダクト本体と、
前記ダクト本体の外面を覆う発泡ゴム製の断熱材と、
前記断熱材の外面を覆うシリコーン樹脂膜と、
を備える空調ダクト。 An air conditioning duct installed outdoors
With a square duct body,
A foam rubber heat insulating material that covers the outer surface of the duct body,
A silicone resin film covering the outer surface of the heat insulating material and
Air conditioning duct with. 前記ダクト本体の上部に、前記シリコーン樹脂膜を覆う状態で保護板が取り付けられている
請求項１に記載の空調ダクト。 The air conditioning duct according to claim 1, wherein a protective plate is attached to the upper part of the duct body so as to cover the silicone resin film. 前記シリコーン樹脂膜は、アクリル樹脂を含有する膜である
請求項１または２に記載の空調ダクト。 The air conditioning duct according to claim 1 or 2, wherein the silicone resin film is a film containing an acrylic resin. 屋外に設置される空調ダクトの施工方法であって、
角形のダクト本体の外面に発泡ゴム製の断熱材を貼り付けることにより、前記ダクト本体の外面を前記断熱材によって覆う工程と、
前記断熱材の外面にシリコーンコーティング材を塗布することにより、前記断熱材の外面をシリコーン樹脂膜によって覆う工程と、
を含む空調ダクトの施工方法。 It is a construction method of an air conditioning duct installed outdoors.
A process of covering the outer surface of the duct body with the heat insulating material by attaching a heat insulating material made of foam rubber to the outer surface of the square duct body.
A step of covering the outer surface of the heat insulating material with a silicone resin film by applying a silicone coating material to the outer surface of the heat insulating material.
Construction method of air conditioning duct including.
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